CN110080921A - A kind of main inlet valve on-line monitoring appraisal procedure of hydroenergy storage station and system - Google Patents

A kind of main inlet valve on-line monitoring appraisal procedure of hydroenergy storage station and system Download PDF

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Publication number
CN110080921A
CN110080921A CN201910290802.3A CN201910290802A CN110080921A CN 110080921 A CN110080921 A CN 110080921A CN 201910290802 A CN201910290802 A CN 201910290802A CN 110080921 A CN110080921 A CN 110080921A
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inlet valve
main inlet
status information
status
information
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CN201910290802.3A
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CN110080921B (en
Inventor
周建中
时有松
刘颉
郭文成
许颜贺
段然
单亚辉
刘畅
刘烨
赵宇杰
李红辉
田弟巍
闫双庆
欧雅雯
柳炀
张天宇
刘宝楠
李朝阳
顾娟
王齐飞
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Huazhong University of Science and Technology
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Huazhong University of Science and Technology
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03BMACHINES OR ENGINES FOR LIQUIDS
    • F03B11/00Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
    • F03B11/004Valve arrangements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03BMACHINES OR ENGINES FOR LIQUIDS
    • F03B11/00Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
    • F03B11/008Measuring or testing arrangements
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/20Hydro energy

Abstract

The invention discloses a kind of main inlet valve on-line monitoring appraisal procedures of hydroenergy storage station and system to obtain characteristic parameter and alarm threshold the method comprise the steps that the main inlet valve status information and main inlet valve state procedure amount information to acquisition are analyzed;According to the characteristic parameter and out-of-limit threshold value, the main inlet valve operating status of real-time monitoring;It scores the status information and process variable information, and operating status assessment and fault diagnosis is carried out according to each component of the scoring to main inlet valve and the main inlet valve of composition.The present invention passes through main inlet valve expert system and knowledge base, establish main inlet valve standards of grading, operating status scoring is carried out to each component of main inlet valve operating status and the main inlet valve of composition, the status assessment and fault diagnosis of main inlet valve and component are realized according to scoring, and provide the safety and reliability that pump-storage generator and the operation of entire power station are improved with targetedly maintenance and repair suggestion.

Description

A kind of main inlet valve on-line monitoring appraisal procedure of hydroenergy storage station and system
Technical field
The invention belongs to hydroelectric generation station owner's inlet valves to monitor assessment technology field on-line, more particularly, to a kind of pumping The main inlet valve on-line monitoring appraisal procedure of water storage station and system.
Background technique
Hydroenergy storage station is to draw water in electric load low ebb to upper storage reservoir, is discharged water again under in electric load peak period Extra electric energy of network load when low can be changed into the high value electric energy of power grid peak time by the power station of hydropower station, also Suitable for frequency modulation, phase modulation, the cycle and voltage of stable power system, and preferably emergency duty, also can be improved in system thermal power station and The efficiency of nuclear power station.The construction of China's hydroenergy storage station is started late, but since back effect starting point is higher, quantity and appearance Amount is increasing, and hydroenergy storage station technology in China's has been in advanced international standard at present.
The main inlet valve of the hydroenergy storage station electromechanical equipment important as power station, upstream and liaison of penstock, downstream with The connection of hydroturbine water intake spiral case, main inlet valve are that safe important set is ensured in the case of pump-storage generator normally produce with accident It is standby.Compared with the main inlet valve of conventional hydraulic generating set, the main inlet valve of pump-storage generator replaces work under a variety of operating conditions Make, is easier to directly cause the main inlet valve component wear of pump-storage generator, vibration aggravation, leads to consequence very serious, therefore For the main inlet valve on-line monitoring of hydroenergy storage station for guaranteeing that its safe and stable operation is of great significance, it is conducive to work people Member has found main inlet valve failure in time, and carries out repair and maintenance, improves the safety and stability of entire unit, reduces economic damage It loses.
But current China realizes that dynamic is supervised just for the Partial Feature parameter of the important operating condition of the main inlet valve of hydroenergy storage station Survey and off-line analysis, do not have status assessment and fault diagnosis, provide the functions such as maintenance and repair suggestion, cause main inlet valve It is likely to be under security risk state and runs, or even failure cause cannot be found in time in maintenance process, find the source of trouble, greatly The safety and reliability of main inlet valve operation is reduced greatly.
Summary of the invention
In view of the drawbacks of the prior art, it is an object of the invention to a kind of main inlet valve on-line monitorings of hydroenergy storage station to comment Estimate method and system, it is intended to solve the main inlet valve of existing hydroenergy storage station can only realize the dynamic monitoring of Partial Feature parameter with Analysis, can not achieve status assessment and fault diagnosis, cause main inlet valve safety in operation and the low problem of reliability.
To achieve the above object, one aspect of the present invention provides a kind of main inlet valve on-line monitoring assessment of hydroenergy storage station Method, comprising:
(1) the main inlet valve status information under all operating conditions is acquired, and is obtained under all operating conditions from unit monitoring system Main inlet valve state procedure amount information;
(2) status information of acquisition and process variable information are analyzed, obtains characteristic parameter and alarm threshold;
(3) according to the characteristic parameter and out-of-limit threshold value, the main inlet valve operating status of real-time monitoring;
(4) it scores the status information and process variable information, and according to the scoring to main inlet valve and composition Each component of main inlet valve carries out operating status assessment and fault diagnosis;
Wherein, the main inlet valve status information includes: working seal pressure, maintenance sealed pressure, valve body vibration, valve body Displacement, telescopic joint displacement and main inlet valve environmental noise.
Further, the step (2) specifically includes:
(2.1) the main inlet valve status information of acquisition is amplified, filtered and is isolated;Status information that treated and mistake Journey amount information constitutes sample data;
(2.2) mean value and peak value of the sample data are extracted, the mean value and peak value are described as trend feature parameter Peak value is as alarm threshold;
(2.3) Fourier transformation is carried out to the sample data, obtained frequency values are as spectrum signature parameter;It is described become Gesture characteristic parameter and the spectrum signature parameter constitute the characteristic parameter.
Further, the step (4) specifically includes:
(4.1) correlation between every status information is analyzed, if | ρ | take one of them as effective status information if=1, If 0 < | ρ | by two as effective status information to be assessed if < 1;Wherein, ρ is the correlation between every status information Coefficient;
(4.2) it is scored according to standards of grading individual event effective status information;
(4.3) according to the scoring of individual event status information and corresponding weight, the comprehensive score of main inlet valve operating status is obtained;
Wherein, effective information under individual event effective information scoring/all operating conditions under individual event effective information weight=all operating conditions Score summation;
(4.4) it is scored according to individual event status information and assesses the operating status for each component for forming main inlet valve;
(4.5) according to the comprehensive score, the operating status of the main inlet valve of comprehensive assessment.
Preferably, standards of grading described in the step (4.2) are as follows:
By sectionWith5 sections are respectively divided into, Corresponding scoring is followed successively by 80,85,90,95,100,100,100,95,90,85,80, if sample data is not in above-mentioned section Scoring is set as 0;
Wherein, xminFor individual event status information minimum value, x under all operating conditionsmaxMost for individual event status information under all operating conditions Big value.
Preferably, the step (4.4) specifically:
When the scoring of individual event status information is zero, the corresponding component malfunction of this status information;
When the scoring of individual event status information is lower than 90 timesharing, corresponding component operating status is not good;
When the scoring of individual event status information is higher than 90 timesharing, corresponding component operating status is good.
Preferably, the step (4.5) specifically:
When comprehensive score is higher than 90 timesharing, main inlet valve overall operation is in good condition;
When comprehensive score is lower than 90 timesharing, main inlet valve overall operation state is not good.
Another aspect of the present invention provides a kind of main inlet valve on-line monitoring assessment system, comprising:
State acquisition subsystem, for acquiring the main inlet valve status information under all operating conditions, and from unit monitoring system Obtain the main inlet valve state procedure amount information under all operating conditions;
Information integration subsystem, for acquisition main inlet valve status information and main inlet valve state procedure amount information into Row analysis, obtains characteristic parameter and alarm threshold;
Monitor And Control Subsystem, for according to the characteristic parameter and out-of-limit threshold value, the main inlet valve operating status of real-time monitoring;
Status assessment subsystem, for scoring the status information and process variable information, and according to the scoring Operating status assessment and fault diagnosis are carried out to each component of main inlet valve and the main inlet valve of composition.
Wherein, the main inlet valve status information includes: working seal pressure, maintenance sealed pressure, valve body vibration, valve body Displacement, telescopic joint displacement and main inlet valve environmental noise.
Further, the main inlet valve state procedure amount information include: downstream pressure, it is upstream pressure, main valve flow, close Envelope throws state of moving back, main inlet valve opening and closing number, main inlet valve emergency cut-off number and main inlet valve opening and closing time.
Further, the main inlet valve information integration subsystem, comprising: signal processing module, data analysis module, number According to memory module and chart display module;
The signal processing module, for the main inlet valve status information of acquisition to be amplified, filters and is isolated;Processing Status information and process variable information afterwards constitutes sample data;
The data analysis module, for extracting the mean value and peak value of the sample data, and by the mean value and peak value As trend feature parameter, using the peak value as alarm threshold;It is also used to carry out Fourier transformation to the sample data, it will Obtained frequency values are as spectrum signature parameter;The characteristic parameter includes that the trend feature parameter and the spectrum signature are joined Number.
The chart display module, for showing the sample data waveform diagram and the resulting spectrogram of Fourier transformation;
The data memory module is used for the storage sample data, characteristic parameter and out-of-limit data.
Further, the status assessment subsystem, comprising: effective status data obtaining module, individual scores module, comprehensive Close grading module, unit status evaluation module and main inlet valve integrality evaluation module;
The effective status data obtaining module, for analyzing correlation between every status information, if | ρ | it is taken if=1 One of them are as effective status information, if 0 < | ρ | by two as effective status information to be assessed if < 1;Wherein, ρ For the related coefficient between every status information;
The individual scores module, for being scored according to standards of grading individual event effective status information;
The comprehensive score module, for obtaining main inlet valve fortune according to the scoring of individual event status information and corresponding weight The comprehensive score of row state;
The unit status evaluation module assesses each component for forming main inlet valve for scoring according to individual event status information Operating status;
The main inlet valve total evaluation module is used for according to the comprehensive score, the main inlet valve entirety of comprehensive assessment Operating status.
Further, the standards of grading are as follows:
By sectionWith5 sections are respectively divided into, Corresponding scoring is followed successively by 80,85,90,95,100,100,100,95,90,85,80, if sample data is not in above-mentioned section Scoring is set as 0;
Wherein, xminFor the individual event status information minimum value under all operating conditions, xmaxFor the individual event state letter under all operating conditions Cease maximum value.
Contemplated above technical scheme through the invention, compared with prior art, can obtain it is following the utility model has the advantages that
(1) present invention acquires main inlet valve status information by sensor, realizes multiple ginsengs under all operating conditions of main inlet valve The dynamic monitoring and analysis of amount effectively increase the safety and reliability of pump-storage generator and the operation of entire power station.
(2) present invention is according to main inlet valve expert system and knowledge base, to main inlet valve operating status and the main water inlet of composition The operating status of each component of valve scores, and carries out status assessment with component to main inlet valve according to scoring and examine with failure It is disconnected, targetedly maintenance and repair suggestion is provided, for the safe and reliable operation of main inlet valve and the construction of propulsion " intelligent power plant " Good basis is established.
Detailed description of the invention
Fig. 1 is that a kind of main inlet valve on-line monitoring appraisal procedure process of hydroenergy storage station provided in an embodiment of the present invention is shown It is intended to;
Fig. 2 is standards of grading setting procedure figure;
Fig. 3 is to carry out status assessment flow diagram to each component of main inlet valve and the main inlet valve of composition;
Fig. 4 is that a kind of main inlet valve on-line monitoring assessment system structure of hydroenergy storage station provided in an embodiment of the present invention is shown It is intended to;
Fig. 5 is the main inlet valve on-line monitoring assessment device material object schematic diagram of hydroenergy storage station;
Wherein, 1 is telescopic joint, and 2 be on-line monitoring assessment system industry control cabinet, and 3 be signal lead slot, and 4 is work after valve Sealed pressure sensor is overhauled, 5 be concrete buttress, and 6 telescopic joint displacement sensors, 7 be valve body displacement sensor, and 8 be valve body Vibrating sensor, 9 overhaul sealed pressure sensor to work before valve, and 10 be main inlet valve, and 11 be sensor noise.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and It is not used in the restriction present invention.
As shown in Figure 1, the embodiment of the present invention one provides a kind of hydroenergy storage station main inlet valve on-line monitoring assessment side Method, comprising:
(1) the main inlet valve status information under all operating conditions is acquired, and is obtained under all operating conditions from unit monitoring system Main inlet valve state procedure amount information;
Specifically, by sensor acquire all operating conditions of the main inlet valve of hydroenergy storage station under include working seal pressure, Overhaul the status informations such as sealed pressure, valve body vibration, valve body displacement, telescopic joint displacement, noise;It is obtained simultaneously from unit monitoring system Take include under all operating conditions downstream pressure, main valve flow, upstream pressure, sealing throw state of moving back, main inlet valve opening and closing number, it is main into The state procedures amount information such as water valve emergency cut-off number, main inlet valve opening and closing time;Main all operating conditions of inlet valve include: that water pump opens Dynamic, water pump, water pump braking, Pump Failure, water pump removal of load, pump of turning one's coat, hydraulic turbine starting, the hydraulic turbine, hydraulic turbine braking, water wheels Machine removal of load, phase modulation etc..
(2) status information of acquisition and process variable information are analyzed, obtains characteristic parameter and alarm threshold;
Specifically, step (2) specifically includes:
(2.1) the main inlet valve status information of acquisition is amplified, filtered and is isolated;Status information that treated and mistake Journey amount information constitutes sample data;
(2.2) sample data waveform diagram is drawn, and extracts mean value and peak value, the mean value and peak value are joined as trend feature Number, for the trend prediction of subsequent period, the peak value is as alarm threshold;
(2.3) Fourier transformation is carried out to sample data, obtained frequency values are as spectrum signature parameter, for frequency spectrum point Analysis;The trend feature parameter and the spectrum signature parameter constitute the characteristic parameter.
(3) according to the characteristic parameter and out-of-limit threshold value, the main inlet valve operating status of real-time monitoring;
Specifically, when status information is more than alarm threshold, sending Threshold Crossing Alert information.
(4) it scores the status information and process variable information, and according to the scoring to main inlet valve and composition Each component of main inlet valve carries out operating status assessment and fault diagnosis;
Specifically, step (4) specifically includes:
(4.1) correlation between every status information is analyzed, if | ρ | take one of them as effective status information if=1, If 0 < | ρ | by two as effective status information to be assessed if < 1;Wherein, ρ is the correlation between every status information Coefficient;
(4.2) as shown in Fig. 2, according to main inlet valve fire protection technology, regulation, main inlet valve knowledge base and expertise by area BetweenWith5 sections are respectively divided into, corresponding scoring is successively It is 80,85,90,95,100,100,100,95,90,85,80, scoring is set as 0 if sample data is not in above-mentioned section;With This scores to individual event effective status information as standards of grading;
Wherein, xminFor the individual event status information minimum value under all operating conditions, xmaxFor the individual event state letter under all operating conditions Cease maximum value.
(4.3) according to the scoring of individual event status information and corresponding weight, the comprehensive score of main inlet valve operating status is obtained; Wherein, effective information scores summation under individual event effective information scoring/all operating conditions under individual event effective information weight=all operating conditions;
(4.4) it is scored according to individual event status information and assesses the operating status for each component for forming main inlet valve;Individual event state When information scoring is zero, it is believed that the corresponding component malfunction of this status information;When the scoring of individual event status information is lower than 90 points When, it is believed that corresponding component operating status is not good;The scoring of individual event status information is higher than 90 timesharing, it is believed that corresponding component operation It is in good condition.
(4.5) according to the comprehensive score, the operating status of main inlet valve is assessed, comprehensive score is higher than 90 timesharing, it is believed that Main inlet valve is generally in kilter;Comprehensive score is lower than 90 timesharing, it is believed that main inlet valve is not whole good or has component event Barrier.
Second embodiment of the present invention provides a kind of main inlet valves of hydroenergy storage station to monitor assessment system on-line, comprising:
State acquisition subsystem, for acquiring the main inlet valve status information under all operating conditions, and from unit monitoring system Obtain the main inlet valve state procedure amount information under all operating conditions;
Information integration subsystem, for acquisition main inlet valve status information and main inlet valve state procedure amount information into Row analysis, obtains characteristic parameter and alarm threshold;
Monitor And Control Subsystem, for according to the characteristic parameter and out-of-limit threshold value, the main inlet valve operating status of real-time monitoring;
Status assessment subsystem, for scoring the status information and process variable information, and according to the scoring Operating status assessment and fault diagnosis are carried out to each component of main inlet valve and the main inlet valve of composition.
Wherein, the main inlet valve status information includes: working seal pressure, maintenance sealed pressure, valve body vibration, valve body Displacement, telescopic joint displacement and main inlet valve environmental noise.
The main inlet valve state procedure amount information includes: downstream pressure, upstream pressure, main valve flow, seals to throw and move back shape State, main inlet valve opening and closing number, main inlet valve emergency cut-off number and main inlet valve opening and closing time.
The information integration subsystem, comprising: signal processing module, data analysis module, data memory module, chart are aobvious Show module;
The signal processing module, for the main inlet valve status information of acquisition to be amplified, filters and is isolated;Processing Status information and process variable information afterwards constitutes sample data;
The data analysis module, for extracting the mean value and peak value of the sample data, and by the mean value and peak value As trend feature parameter, using the peak value as alarm threshold;It is also used to carry out Fourier transformation to the sample data, it will Obtained frequency values are as spectrum signature parameter;The characteristic parameter includes that the trend feature parameter and the spectrum signature are joined Number;
The chart display module, for showing the sample data waveform diagram and the resulting spectrogram of Fourier transformation;
The data memory module is used for the storage sample data, characteristic parameter and out-of-limit data.
The status assessment subsystem, comprising: effective status data obtaining module, individual scores module, comprehensive score mould Block, unit status evaluation module and main inlet valve integrality evaluation module;
The effective status data obtaining module, for analyzing correlation between every status information, if | ρ | it is taken if=1 One of them are as effective status information, if 0 < | ρ | by two as effective status information to be assessed if < 1;Wherein, ρ For the related coefficient between every status information;
The individual scores module, for being scored according to standards of grading individual event effective status information;
The comprehensive score module, for obtaining main inlet valve fortune according to the scoring of individual event status information and corresponding weight The comprehensive score of row state;
The unit status evaluation module assesses each component for forming main inlet valve for scoring according to individual event status information Operating status;
The main inlet valve total evaluation module, for assessing the operation of main inlet valve entirety according to the comprehensive score State.
In embodiments of the present invention, the specific implementation of subsystems and module can be real with reference to above-mentioned corresponding method The description in example is applied, the embodiment of the present invention will be repeated no longer.
The embodiment of the present invention three provides a kind of main inlet valve on-line monitoring assessment device of hydroenergy storage station, and pictorial diagram is such as Shown in Fig. 5, comprising: telescopic joint 1 monitors assessment system industry control cabinet 2 on-line, and signal lead slot 3, work after valve maintenance sealing pressure Force snesor 4, concrete buttress 5, telescopic joint displacement sensor 6, valve body displacement sensor 7, valve body vibrating sensor 8, before valve Work maintenance sealed pressure sensor 9, main inlet valve 10, sensor noise 11;
Assessment system industry control cabinet 2, the on-line monitoring assessment system as provided in embodiment two are provided on-line;
Signal lead slot 3, the signal cable cabling for each sensor are arranged;
Work the touch sensor for overhauling that sealed pressure sensor 4 is LOG402 type after valve, for working after monitoring valve Sealed pressure and maintenance sealed pressure, are connected with three-way connection with mechanical pressure gauge.
Telescopic joint displacement sensor 6 is the noncontacting proximity sensor of ML33 series, for monitoring telescopic joint displacement, selects angle Making material of the steel as bracket, and design telescopic joint sensor support structure, it is desirable that sensor mounting hole distance is tested plane 78mm;
Valve body displacement sensor 7 is the noncontacting proximity sensor of ML33 series, for monitoring valve body displacement, angle steel is selected to make For the making material of bracket, and design telescopic joint sensor support structure, it is desirable that sensor mounting hole distance is tested plane 78mm; Wherein, 2 measurement sensors measure the displacement of X, Y-direction, ball valve pedestal X-direction (Parallel to the flow direction), perpendicular to water respectively It is Y-direction that stream, which is directed toward valve body direction,;Particularly, diagonal line has identical valve body to be displaced symmetrical point layout.
Valve body vibrating sensor 8 is the touch sensor of PCB-622B01 single-shaft variant, for monitoring valve body vibration, wherein There are 3 measurement sensors to be directed toward valve body, measures the vibration of X, Y, Z-direction: ball valve pedestal X-direction (Parallel to the flow direction), the side Y respectively To (Transverse to the flow direction), Z-direction (perpendicular to buttress direction);Particularly, diagonal line has identical valve body vibration is symmetrical to survey Point arrangement.
Work the touch sensor for overhauling that sealed pressure sensor 9 is LOG402 type before valve, for working before monitoring valve Sealed pressure and maintenance sealed pressure, are connected with three-way connection with mechanical pressure gauge.
Sensor noise 11 is the contactless sensor noise of PCB-130A24 type, for monitoring environmental noise.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should all include Within protection scope of the present invention.

Claims (10)

1. a kind of main inlet valve of hydroenergy storage station monitors appraisal procedure on-line characterized by comprising
(1) the main inlet valve status information of acquisition and main inlet valve state procedure amount information are analyzed, obtains characteristic parameter And alarm threshold;
(2) according to the characteristic parameter and out-of-limit threshold value, main inlet valve operating status described in real-time monitoring;
(3) score the status information and process variable information, and according to the scoring to main inlet valve and composition master into Each component of water valve carries out operating status assessment and fault diagnosis;
Wherein, the main inlet valve status information includes: working seal pressure, maintenance sealed pressure, valve body vibration, valve body position It moves, telescopic joint is displaced and main inlet valve environmental noise.
2. the main inlet valve of a kind of hydroenergy storage station according to claim 1 monitors appraisal procedure on-line, which is characterized in that The step (1) specifically includes:
(1.1) the main inlet valve status information of acquisition is amplified, filtered and is isolated;Status information that treated and process variable Information constitutes sample data;
(1.2) mean value and peak value of the sample data are extracted, the mean value and peak value are as trend feature parameter, the peak value As alarm threshold;
(1.3) Fourier transformation is carried out to the sample data, obtained frequency values are as spectrum signature parameter;The trend is special It levies parameter and the spectrum signature parameter constitutes the characteristic parameter.
3. the main inlet valve of a kind of hydroenergy storage station according to claim 1 monitors appraisal procedure on-line, which is characterized in that The step (3) specifically includes:
(3.1) correlation between every status information is analyzed, if | ρ | take one of them as effective status information if=1, if 0 < | ρ | < 1 is then by two as effective status information to be assessed;Wherein, ρ is the phase relation between every status information Number;
(3.2) it is scored according to standards of grading individual event effective status information;
(3.3) according to the scoring of individual event status information and corresponding weight, the comprehensive score of main inlet valve operating status is obtained;Its In, effective information scoring summation under individual event effective information scoring/all operating conditions under individual event effective information weight=all operating conditions;
(3.4) it is scored according to individual event status information and assesses the operating status for each component for forming main inlet valve;
(3.5) according to the comprehensive score, the operating status of the main inlet valve of comprehensive assessment.
4. the main inlet valve of a kind of hydroenergy storage station according to claim 3 monitors appraisal procedure on-line, which is characterized in that Standards of grading described in the step (3.2) are as follows:
By sectionWith5 sections are respectively divided into, it is corresponding Scoring is followed successively by 80,85,90,95,100,100,100,95,90,85,80, scores if sample data is not in above-mentioned section It is set as 0;
Wherein, xminFor the individual event status information minimum value under all operating conditions, xmaxMost for the individual event status information under all operating conditions Big value.
5. the main inlet valve of a kind of hydroenergy storage station according to claim 3 monitors appraisal procedure on-line, which is characterized in that The step (3.4) specifically:
When the scoring of individual event status information is zero, the corresponding component malfunction of this status information;
When the scoring of individual event status information is lower than 90 timesharing, corresponding component operating status is not good;
When the scoring of individual event status information is higher than 90 timesharing, corresponding component operating status is good.
6. the main inlet valve of a kind of hydroenergy storage station according to claim 3 monitors appraisal procedure on-line, which is characterized in that The step (3.5) specifically:
When comprehensive score is higher than 90 timesharing, main inlet valve overall operation is in good condition;
When comprehensive score is lower than 90 timesharing, main inlet valve overall operation state is not good.
7. a kind of main inlet valve of hydroenergy storage station monitors assessment system on-line characterized by comprising
Information integration subsystem, for acquisition main inlet valve status information and main inlet valve state procedure amount information divide Analysis, obtains characteristic parameter and alarm threshold;
Monitor And Control Subsystem, for according to the characteristic parameter and out-of-limit threshold value, the main inlet valve operating status of real-time monitoring;
Status assessment subsystem, for scoring the status information and process variable information, and according to the scoring to master Each component of inlet valve and the main inlet valve of composition carries out operating status assessment and fault diagnosis.
Wherein, the main inlet valve status information includes: working seal pressure, maintenance sealed pressure, valve body vibration, valve body position It moves, telescopic joint is displaced and main inlet valve environmental noise.
8. the main inlet valve of a kind of hydroenergy storage station according to claim 7 monitors assessment system on-line, which is characterized in that The information integration subsystem, comprising: signal processing module, data analysis module;
The signal processing module, for the status information of acquisition to be amplified, filters and is isolated;Status information that treated Sample data is constituted with process variable information;
The data analysis module, for extracting the mean value and peak value of the sample data, and using the mean value and peak value as Trend feature parameter, using the peak value as alarm threshold;It is also used to carry out Fourier transformation to the sample data, will obtain Frequency values as spectrum signature parameter;The trend feature parameter and the spectrum signature parameter constitute the characteristic parameter.
9. the main inlet valve of a kind of hydroenergy storage station according to claim 7 monitors assessment system on-line, which is characterized in that The status assessment subsystem, comprising: effective status data obtaining module, individual scores module, comprehensive score module, component shape State evaluation module and main inlet valve integrality evaluation module;
The effective status data obtaining module, for analyzing correlation between every status information, if | ρ | it is taken wherein if=1 One is used as effective status information, if 0 < | ρ | by two as effective status information to be assessed if < 1;Wherein, ρ is each Related coefficient between item status information;
The individual scores module, for being scored according to standards of grading individual event effective status information;
The comprehensive score module, for obtaining main inlet valve operation shape according to the scoring of individual event status information and corresponding weight The comprehensive score of state;
The unit status evaluation module assesses the fortune for each component for forming main inlet valve for scoring according to individual event status information Row state;
The main inlet valve total evaluation unit, for assessing the operating status of main inlet valve entirety according to the comprehensive score.
10. the main inlet valve of a kind of hydroenergy storage station according to claim 9 monitors assessment system on-line, feature exists In the standards of grading are as follows:
By sectionWith5 sections are respectively divided into, it is corresponding Scoring is followed successively by 80,85,90,95,100,100,100,95,90,85,80, scores if sample data is not in above-mentioned section It is set as 0;
Wherein, xminFor the individual event status information minimum value under all operating conditions, xmaxMost for the individual event status information under all operating conditions Big value.
CN201910290802.3A 2019-04-11 2019-04-11 Online monitoring and evaluating method and system for main water inlet valve of pumped storage power station Active CN110080921B (en)

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